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gkhenderson · 06-01-2023, 10:23 PM

Recently calibre on my Windows 10 64bit PC won't run.

It displays the small start up panel with the user iterface start up message and then hangs. Never appears in the Task Manager. If I kill it and try again I usually get an error

"Failed to contact running instance of calibre try restarting calibre"

If I do I get the same response.

Same problem occurs if run calibre in Windows Safe mode,
Same problem if I try running in debug mode
Am using Calibre 6.1
Have tried deleting and reinstalling calibre - same result.

Any suggestions welcome

Graham Henderson

06-01-2023, 10:23 PM	#1
gkhenderson Junior Member Posts: 6 Karma: 10 Join Date: Jun 2023 Device: Ipad	Calibre won't start problem Recently calibre on my Windows 10 64bit PC won't run. It displays the small start up panel with the user iterface start up message and then hangs. Never appears in the Task Manager. If I kill it and try again I usually get an error "Failed to contact running instance of calibre try restarting calibre" If I do I get the same response. Same problem occurs if run calibre in Windows Safe mode, Same problem if I try running in debug mode Am using Calibre 6.1 Have tried deleting and reinstalling calibre - same result. Any suggestions welcome Graham Henderson